If you’re just shooting in the dark, CMC Government Supply can shed some light on the situation. With a multitude of shotgun lights to choose from, CMC can get you the right light for your firearm at a great price.
A great choice for your Remington 870, Mossberg 500 or Mossberg 580 is the EOTech Integrated Fore-end Light. The TSFL fore-end light affords the user an incredible tactical advantage through the use of ambidextrous on/off pressure pads at your fingertips. Settings include constant on, momentary, strobe and off. In high pressure situations you simply tap the pressure pads for activation, never adjusting your grip to do it. Your hand is always on the fore-end, at the ready making this new integrated fore-end light ideal for Law Enforcement or Home Defense.
Another popular shotgun light is the Surefire 618LM LED Weapon Light for Remington 870. This light replaces the original forend of your Remington 870 shotgun. It has a compact 2 battery system that features a virtually indestructible LED emitter focused by a TIR lens, which produces a brilliant beam optimized for close- to medium range applications. Two switches are integrated into the forend: a momentary-on pressure pad switch (right side) and a constant-on rocker switch (left side). The 618LM generates 200 lumens of output and has a tactical runtime of 2 hours per set of batteries, with gradually decreasing output afterward. The tough polymer body features a molded-in high-friction pad for enhanced grip in wet or cold conditions. CMC also offers the Surefire Scout and Mini Scout line.
An extremely compact tactical gun mount is the Streamlight TLR series. CMC features several models of this light, which has great reviews for its great fit and bright light. It weighs less than 3 ounces and includes 6 interchangeable keys to fit a wide variety of weapons.
The Insight Tech Gear Tactical Illuminator series includes the M3, M3X and M6X models and claim to be in more holsters of police officers than any other brand and mounted on countless defense weapons. These tactical tools include the patented Universal Slide-Lock and have a run time of one hour.